Adam Pally (“Happy Endings”) and Sam Richardson (“Veep”) have proved they can shine in top-notch sitcoms. Their latest venture, “Champaign, ILL,” isn’t one of those. The pair play formerly ambitious high school grads who lose their self-worth — and a significant number of brain cells — after tossing aside their personal ambitions to be part of a friend’s rap posse. It’s a promising premise, but the bits come across like improv exercises that aren’t quite ready for the main stage.

Now streaming on YouTube Premium

Thrashing around

You may not have heard of the band featured in “Agnostic Front: Godfathers of Hardcore,” but its thrash-metal sound would end up influencing everyone from Rancid to Metallica. Director Ian McFarland looks at the group’s impact in the 1980s and the bond between its co-founders Vinnie Stigma and Roger Miret. The film is part of Showtime’s weeklong string of new music documentaries that also spotlight Jeff Beck and GG Allin.

9 p.m. Showtime

Weather outside is frightful

“Paris to Pittsburgh” looks at the effects of climate change in the modern era and how individuals are responding. There’s a heavy emphasis on America with visits to Iowa, California, Florida and New Jersey.

8 p.m. National Geographic

Neal Justin

Neal Justin covers the entertainment world, primarily TV and radio. He also reviews stand-up comedy. Justin is the founder of JCamp, a non-profit program for high-school journalists, and works on many fronts to further diversity in newsrooms.